import java.util.ArrayList;
import java.util.Scanner;

public class testsu {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList< String > list = new ArrayList< String >();
<<<<<<< HEAD
=======
        int n = sc.nextInt();
>>>>>>> 2b229e6 (第一次代码提交 代码变更)

    }
    }
